13992971155524 has 81 divisors (see below), whose sum is σ = 35984198599167. Its totient is φ = 4584833461008.

The previous prime is 13992971155511. The next prime is 13992971155529. The reversal of 13992971155524 is 42555117929931.

The square root of 13992971155524 is 3740718.

It is a perfect power (a square), and thus also a powerful number.

13992971155524 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 2 + 9 + 71 + 1 + 5 + 552 + 4 = 666.

13992971155524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13992971155529) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1324208889 + ... + 1324219455.

Almost surely, 2^{13992971155524} is an apocalyptic number.

13992971155524 is the 3740718-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13992971155524

13992971155524 is an abundant number, since it is smaller than the sum of its proper divisors (21991227443643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13992971155524 is an frugal number, since it uses more digits than its factorization.

13992971155524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21262 (or 10631 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 63.

The spelling of 13992971155524 in words is "thirteen trillion, nine hundred ninety-two billion, nine hundred seventy-one million, one hundred fifty-five thousand, five hundred twenty-four".